Institute of Metal Science, Equipment and Technologies With Hydroaerodynamics Centre, Bulgarian Academy of Sciences—67 “Shipchenski prohod” Str., 1574 Sofia, Bulgaria
Prof. Dr. Ludmil Drenchev
Institute of Metal Science, Equipment and Technologies With Hydroaerodynamics Centre, Bulgarian Academy of Sciences—67 “Shipchenski prohod” Str., 1574 Sofia, Bulgaria